A prenuptial agreement is only valid if it is completed prior to marriage. After a couple is married, they may draw up a post-nuptial agreement. In the United States, prenuptial agreements are recognized in all fifty states and the District of Columbia.
Osmosis - the diffusion of water (across a membrane) Water will move in the direction where there is a high concentration of solute (and hence a lower concentration of water. A simple rule to remember is: Salt is a solute, when it is concentrated inside or outside the cell, it will draw the water in its direction.
Osmosis is the process of diffusion of water across a semipermeable membrane. Water molecules are free to pass across the cell membrane in both directions, either in or out, and thus osmosis regulates hydration, the influx of nutrients and the outflow of wastes, among other processes. Osmosis in a plant cell.